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Mechanism of adsorption of long-chain alkylamines on silicates: a spectroscopic study. 2. Albite
St. Petersburg State Technical University.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Sustainable Process Engineering.
St. Petersburg State Technical University.
Avdelningen för oorganisk kemi, Umeå universitet.
2001 (English)In: Langmuir, ISSN 0743-7463, E-ISSN 1520-5827, Vol. 17, no 3, p. 775-785Article in journal (Refereed) Published
Abstract [en]

Using FTIR (DRIFTS and IRRAS) and XPS spectroscopy, ζ potential measurements, and Hallimond flotation tests, we confirmed that long-chain primary amines are adsorbed on silicates at pH 6-7 through the 2D-3D precipitation mechanism. The orientation and packing of dodecyl- and hexadecylammonium acetate and chloride adsorbed on albite in the different regions of the adsorption isotherm were determined. It was shown that these characteristics depend strongly on the substrate. Coadsorption of the counterion was not revealed, but the counterion was found to affect indirectly the adsorption at concentrations above the concentration of the bulk amine precipitation

Place, publisher, year, edition, pages
2001. Vol. 17, no 3, p. 775-785
National Category
Metallurgy and Metallic Materials
Research subject
Mineral Processing
Identifiers
URN: urn:nbn:se:ltu:diva-10358DOI: 10.1021/la001023uISI: 000166765400032Scopus ID: 2-s2.0-0343724633Local ID: 92903dd0-3c8f-11de-bf5b-000ea68e967bOAI: oai:DiVA.org:ltu-10358DiVA, id: diva2:983300
Note
Validerad; 2001; 20090509 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Rao, K. Hanumantha

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